The mandibles are usually lost, the labrum is reduced to a narrow transverse sclerite, and the labium is a small flap ( though its palps retain quite large).
颚
，
化为
条窄横片，
化为小片（须发达）。
声明：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
生理
篇 In an anatomical female, that involves the vulva, which includes the mons pubis over the pubic bone, and labia majora and labia minora — the elongated skin folds that surround the vestibule, which contains both the urethral and vaginal openings.
在
女性中，这涉及外
，包
耻骨上的耻骨，大唇
唇——前庭周围的细长皮肤褶皱，前庭包尿道口道口。
